The bus swerved on a stretch of road, lost control and plummeted 400 metres from a cliff into the Sunkosi river, police told the BBC.

BBC: Nepal bus plunges off mountain road 'killing 41'

Suvarnabhumi's international terminal is one long strip with retail outlets distributed throughout, and passengers leaving passport control emerge into the center of a kilometer-long stretch of duty-free shopping.

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The stretch of road where they perished is notorious for bandits, but warriors fighting for control of the country have also been mentioned as possible attackers.

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